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Long staple yarn spinning mechanism and process


Solid twist wrapped yarn Tz = / V2-1 /, rd ~ where: d is winding yarn twisting spindle arm radius. (4) the average linear density of yarn (km / g) calculated-T2 + · (Tl + T3) which is decorated with yarn numbers tT} T2 numbers for the core yarn yarn} R is solid numbers. (5) Summary of sub-knot fancy yarn density and the density is too summary of sub-unit length of yarn with a knot the frequency f said. Then produces a knot of period T-1. The size of the knot with its maximum diameter and yarn diameter ratio and the slip direction of the width of the yarn to represent. (6) calculated the output of fancy twisting machines: spinning restrain the second phase of XIX in which M a 1000tVzY · _ _ 【working time; V output speed for the core yarn fancy yarn T is linear density; as efficiency. 2. Fancy yarn fancy style of factors through experimental observation and theoretical analysis. We think: fancy yarn fancy style of factors: ① decorative yarn and core yarn overfeed between; @ core yarn, solid yarn, decorative yarn wrapped between the core yarn twist ③ with decorative yarn count ratio and stiffness ratio; ④ spinning speed; @ decorative yarn, core yarn and solid yarn tension during twisting. Now, through the over-feed-type fancy yarn spinning is used to discuss their style of fancy yarn and fancy. (1) fancy yarn over-feed ratio on the impact of style (see Table 1) over-feed rate of decline a fancy line style, the impact on the Core sub-density ratio (X / m knot length (ram) knot height (ram; 1 Test conditions .27083.431.671624.082.0725.56.122.4724.88.542.8734.28.86 ① equipment car home second roller twister, two-step spinning method; raw materials: the core line of '/ 2 polyester / rayon strand; decorative lines DTYPET100D/24f ~ solid line FDYPET100D/g4f ~ process conditions: 800 twists / m, spindle speed 2485r/min; over-feed rates were obtained: 1.2,[link widoczny dla zalogowanych],1.6,2.0 , 2.4,2.8. ② Test Results The results show that the twist in the case of constant twisting, (i) over-feed rate directly affects the size of the knot the size of the overfeed rate from small to large changes in knot Summary of fancy yarn from the sub to loop yarn, braided yarn. The width of the knot gradually become smaller, gradually increase the height of knot (| _) fancy yarn over-feed ratio on the frequency of knot little effect. (2) fancy yarn twisting style twist on the impact (see Table 2) ① Test conditions: 1 with the experimental equipment; material with the experimental one; process conditions turn spindle speed 2485r/min, the overfeed ratio V: V = 1.6. Core yarn, decorative yarn twist (twist / m) for the 400,[link widoczny dla zalogowanych],600,[link widoczny dla zalogowanych],800,1000 ③ In the case of over-feed unchanged. twisting twist the greater the wider the lower knot, knot the frequency slightly increased, indicating With the increase of twist. knot will become small, dense, firm, uniform. bad 2 line twist on the style of fancy twist knot density (j / m: Results of 52 degrees (mm6l8 child height (∞) din (3 ) decorative yarn core yarn count ratio (or the stiffness ratio) on the style of fancy yarn test conditions: 1 with the experimental device; spindle speed 2485r/rain; overfeed ratio vl: V2-1.6; 800 twist / m. raw cotton yarn ① core 2r, decorated 21.; ② core 21., decorated with 32 '} ③ Cang 16I, decorated with 32' The results show that: core yarn, decorative yarn count ratio (Vice-degree ratio) the greater the difference, more easy to form the knot, and knot big and soft, little effect on the shape of the knot, but the knot slightly lower frequency of occurrence; and vice versa (4) fancy yarn fancy yarn spinning speed of the test shows that the impact of style, When the spinning speed increases, the yarn tension will increase, the impact of fancy yarn, the main knot would become lower than the speed of the spinning parameters of the same knot fancy yarns height smaller, and knot the frequency change in the basic grant has four, the conclusion by the experiment, end table mechanism of the yarn, fancy yarns that form the key sub-culture super-feed and twisting twist and decorative lines, cell lines of common torsional bending rigidity role. in fancy yarn processing, the role of force in the twisting, the core yarn and decorated with yarn torsional bending forces from the balance to unbalanced, and from unbalanced to balanced. overfeed effect is caused by imbalance the formation of core yarn knot yarn and decorated with its own forces and torsional bending twisting force size is determined by the balance and imbalance in the process. General ④ overfeed is larger, the larger the knot formation, over-feed small, then the knot is also small. @ twist is large, the knot is small and hard. twist into small knot big and soft @ decorative yarn and core yarn torsional degree of stiffness difference,[link widoczny dla zalogowanych], the more easy to form the knot and the knot is large and soft,[link widoczny dla zalogowanych],} l bite difference in the degree of small, more difficult to form the knot and the knot is small and hard.
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